Laerophen was in the library most of the time, to be honest. He was very surprised to hear (afterwards!) that there had apparently been dwarves in the dungeons. Oh.
Laindawar was on patrol in the eastern reaches of Mirkwood. He was killing spiders when a messenger came racing through the forest to tell him of the muster of the Elves and the march upon Erebor. He nodded, but did not speak. Catch him leaving the Greenwood? Not likely. He would stay and ensure its safety. No citadel of the Dwarves, not even the fabled treasure of Thror, could entice him to leave it.